Adults are short and exceedingly stout, commonly growing to 18–24 inches (46–61 centimetres) in total length. The snout is rounded with a sharp canthus.[3]
At midbody there are 23-27 rows of dorsal scales that are strongly keeled, tubercular in large specimens. The ventral scales are 121-135, while the subcaudals are 26-36 and mostly single. The eye is separated from the labial scales by 3-4 rows of small scales.[3]
The color pattern consists of a tan, light brown or gray ground color that is overlaid with a series of around 20 dark brown or black rhomboid blotches. The lower tips of these blotches often connect with spots on the flanks to form narrow crossbands. The top of the head is dark with oblique postorbital stripes, below which the side of the head is a lighter color. The belly is whitish, occasionally with dark brown blotches.[3]
These snakes have sometimes been mistaken for young bushmasters (Lachesis muta), but can easily be identified by their lack of a specialized tail tip.[3]
Geographic rangeedit
Found in eastern Mexico from San Luis Potosí southeastward on the Atlantic versant and lowlands. Found in various types of forest, including cloud forest and rain forest at 40–1,600 m (130–5,250 ft) altitude. The type originally lacked locality information, but apparently "Mexico" was filled in some time later. A restriction to Teapa, Tabasco, Mexico, was proposed by Burger (1950).[1]Metlapilcoatlus mexicanus and Metlapilcoatlus occiduus were both formerly considered subspecies.
Conservation statusedit
This species is classified as Least Concern (LC) on the IUCNRed List of Threatened Species (v3.1, 2001).[4] Species are listed as such due to their wide distribution, presumed large population, or because it is unlikely to be declining fast enough to qualify for listing in a more threatened category. The population trend is stable. Year assessed: 2007.[5]
Referencesedit
^ abMcDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1. Herpetologists' League. 511 pp. ISBN1-893777-00-6 (series). ISBN1-893777-01-4 (volume).
^Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. 2 volumes. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. ISBN0-8014-4141-2.
^ abcdeU.S. Navy. 1991. Poisonous Snakes of the World. US Govt. New York: Dover Publications Inc. 203 pp. ISBN0-486-26629-X.
^Atropoides nummifer at the IUCN Red List. Accessed 14 September 2007.
^2001 Categories & Criteria (version 3.1) at the IUCN Red List. Accessed 14 September 2007.
Further readingedit
Rüppell, E. 1845. Verzeichnis der in dem Museum der Senckenbergischen naturforschenden Gesellschaft aufgestellten Sammlungen. Dritte Abteilung: Amphibien. Mus. Senckenbergianum 3 (3): 293-316. (Atropos nummifer)
External linksedit
Wikimedia Commons has media related to Metlapilcoatlus nummifer.
Metlapilcoatlus nummifer at the Reptarium.cz Reptile Database. Accessed 14 September 2007.
December 20, 2023
metlapilcoatlus, nummifer, commonly, known, mexican, jumping, pitviper, jumping, viper, venomous, viper, species, endemic, mexico, conservation, statusleast, concern, iucn, scientific, classificationdomain, eukaryotakingdom, animaliaphylum, chordataclass, rept. Metlapilcoatlus nummifer commonly known as Mexican jumping pitviper 2 or jumping viper 3 is a venomous pit viper species endemic to Mexico Metlapilcoatlus nummiferConservation statusLeast Concern IUCN 3 1 Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass ReptiliaOrder SquamataSuborder SerpentesFamily ViperidaeGenus MetlapilcoatlusSpecies M nummiferBinomial nameMetlapilcoatlus nummifer Ruppell 1845 SynonymsAtropos nummifer Ruppell 1845 T rigonocephalus nummifer Jan 1859 T eleuraspis nummifer Cope 1860 B othrops nummifer Jan 1863 Th anotos nummifer Posada Arango 1889 Th anotophis nummifer Posada Arango 1889 Bothriechis nummifera Gunther 1895 Lachesis nummifer Boulenger 1896 Lachesis nummifera Boettger 1898 Trimeresurus nummifer Mocquard 1909 Bothriochis mammifera Recinos 1913 ex errore Bothrops nummifera March 1929 T rimeresurus n ummifer nummifer Dunn 1939 Bothrops nummifer nummifer Burger 1950 Bothrops nummifer veraecrusis Burger 1950 Porthidium nummifer Campbell amp Lamar 1989 Atropoides nummifer Werman 1992 1 Contents 1 Description 2 Geographic range 3 Conservation status 4 References 5 Further reading 6 External linksDescription editAdults are short and exceedingly stout commonly growing to 18 24 inches 46 61 centimetres in total length The snout is rounded with a sharp canthus 3 At midbody there are 23 27 rows of dorsal scales that are strongly keeled tubercular in large specimens The ventral scales are 121 135 while the subcaudals are 26 36 and mostly single The eye is separated from the labial scales by 3 4 rows of small scales 3 The color pattern consists of a tan light brown or gray ground color that is overlaid with a series of around 20 dark brown or black rhomboid blotches The lower tips of these blotches often connect with spots on the flanks to form narrow crossbands The top of the head is dark with oblique postorbital stripes below which the side of the head is a lighter color The belly is whitish occasionally with dark brown blotches 3 These snakes have sometimes been mistaken for young bushmasters Lachesis muta but can easily be identified by their lack of a specialized tail tip 3 Geographic range editFound in eastern Mexico from San Luis Potosi southeastward on the Atlantic versant and lowlands Found in various types of forest including cloud forest and rain forest at 40 1 600 m 130 5 250 ft altitude The type originally lacked locality information but apparently Mexico was filled in some time later A restriction to Teapa Tabasco Mexico was proposed by Burger 1950 1 Metlapilcoatlus mexicanus and Metlapilcoatlus occiduus were both formerly considered subspecies Conservation status editThis species is classified as Least Concern LC on the IUCN Red List of Threatened Species v3 1 2001 4 Species are listed as such due to their wide distribution presumed large population or because it is unlikely to be declining fast enough to qualify for listing in a more threatened category The population trend is stable Year assessed 2007 5 References edit a b McDiarmid RW Campbell JA Toure T 1999 Snake Species of the World A Taxonomic and Geographic Reference vol 1 Herpetologists League 511 pp ISBN 1 893777 00 6 series ISBN 1 893777 01 4 volume Campbell JA Lamar WW 2004 The Venomous Reptiles of the Western Hemisphere 2 volumes Comstock Publishing Associates Ithaca and London 870 pp 1500 plates ISBN 0 8014 4141 2 a b c d e U S Navy 1991 Poisonous Snakes of the World US Govt New York Dover Publications Inc 203 pp ISBN 0 486 26629 X Atropoides nummifer at the IUCN Red List Accessed 14 September 2007 2001 Categories amp Criteria version 3 1 at the IUCN Red List Accessed 14 September 2007 Further reading editRuppell E 1845 Verzeichnis der in dem Museum der Senckenbergischen naturforschenden Gesellschaft aufgestellten Sammlungen Dritte Abteilung Amphibien Mus Senckenbergianum 3 3 293 316 Atropos nummifer External links edit nbsp Wikimedia Commons has media related to Metlapilcoatlus nummifer Metlapilcoatlus nummifer at the Reptarium cz Reptile Database Accessed 14 September 2007 Retrieved from https en wikipedia org w index php title Metlapilcoatlus nummifer amp oldid 1101582539, wikipedia, wiki, book, books, library,
